Dec. 09, 2015, 10 a.m. (ET)

Olympic gold and silver medalist gymnast McKayla Maroney is known for showing her emotions just as much as she is for her impressive skills on vault. In honor of her 20th birthday on Dec. 9, TeamUSA.org put together 20 of the best facial expressions of Maroney's career. From serious looks of focus to glares of competitive ferocity to the infamous "not impressed" face, Maroney has provided some great pictures over the years. 


1) Focus
McKayla Maroney gets ready to compete in the women's vault qualification during the Artistic Gymnastics World Championships Belgium 2013 held at the Antwerp Sports Palace on Oct. 2, 2013 in Antwerp, Belgium.

2) Ready To Face The Challenge Ahead
McKayla Maroney looks on during the women's vault final during the London 2012 Olympic Games at North Greenwich Arena on Aug. 5, 2012 in London.

3) I'm Here To Win
McKayla Maroney during practice before the start of the 2012 U.S. Olympic Team Trials for Gymnastics at HP Pavilion on July 1, 2012 in San Jose, Calif.

4) Is This Real Gold?
(L-R) McKayla Maroney, Kyla Ross, Aly Raisman, Gabby Douglas and Jordyn Wieber celebrate after winning the gold medal in the women's team final during the London 2012 Olympic Games at North Greenwich Arena on July 31, 2012 in London.

5) The Thrill Of The Signature
McKayla Maroney visits USA House at the Royal College of Art on Aug. 7, 2012 in London.

6) Pure Elation 
McKayla Maroney celebrates her performance on the vault in the women's team final during the London 2012 Olympic Games at North Greenwich Arena on July 31, 2012 in London.

7) The Glare 
McKayla Maroney looks on as she is introduced for the women's team final during the London 2012 Olympic Games at North Greenwich Arena on July 31, 2012 in London.

8) And Another
McKayla Maroney gets ready to compete during the 2013 Artistic Gymnastics World Championships on Sept. 23, 2013 in Antwerp, Belgium. 

9) And Another
McKayla Maroney looks on during the 2013 Artistic Gymnastics World Championships on Oct. 5, 2013 in Antwerp, Belgium.

10) Strike A Pose
McKayla Maroney attends The 2013 ESPY Awards at Nokia Theatre L.A. Live on July 17, 2013 in Los Angeles.

11) Just Wait Until Next Time
Silver medalist McKayla Maroney greets gold medalist Sandra Raluca Izbasa of Romania during the medal ceremony following the women's vault final during the London 2012 Olympic Games at North Greenwich Arena on Aug. 5, 2012 in London.

12) Making Friends
Lolo Jones and McKayla Maroney attend Nickelodeon Kids' Choice Sports Awards 2014 at UCLA's Pauley Pavilion on July 17, 2014 in Los Angeles.

13) That Didn't Go As Planned 
McKayla Maroney looks on as she is consoled by coach Yin Alvarez after she fell on a dismount while competing in the women's vault final during the London 2012 Olympic Games at North Greenwich Arena on Aug. 5, 2012 in London.

14) Shock
McKayla Maroney fails to land her dismount in the women's vault final during the London 2012 Olympic Games at North Greenwich Arena on Aug. 5, 2012 in London.

15) Confidence 
McKayla Maroney looks on during the 2013 Artistic Gymnastics World Championships on Sept. 29, 2013 in Antwerp, Belgium.

16) Future Career?
McKayla Maroney, Aly Raisman and Jordyn Wieber ring the closing bell at the New York Stock Exchange on Aug. 14, 2012 in New York City.

17) Graceful
McKayla Maroney poses following her floor exercise during the 2013 P&G Championships on Aug. 17, 2013 in Hartford, Conn.

18) We Did It
McKayla Maroney hugs teammate Aly Raisman during the women's team final at the London 2012 Olympic Games at North Greenwich Arena on July 31, 2012 in London.

19) Winding Up
McKayla Maroney throws out a ceremonial first pitch before the Chicago White Sox game against the Minnesota Twins at U.S. Cellular Field on Aug. 1, 2014 in Chicago.

20) And Of Course....
McKayla Maroney stands on the podium with her silver medal during the medal ceremony following the women's vault final at the London 2012 Olympic Games at North Greenwich Arena on Aug. 5, 2012 in London.